2² × 31 × 5167

Prime Factor Structure

Factorization String 2^2 × 31 × 5167

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 1,157,632

Proper Divisor Sum 516,924

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #640691 ← → #640727

1 2 4 31 62 124 5,167 10,334 20,668 160,177 320,354 640,708

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

640,708 320,354 160,177 480,532 240,266 120,133 360,400 180,200 90,100 45,050 22,525 67,576 33,788 16,894 8,447 25,342 12,671 38,014 19,007 57,022 28,511 85,534 42,767 128,302 64,151 192,454 96,227 288,682 144,341 433,024 216,512 108,256 54,128 27,064 13,532 6,766 3,383 10,150 5,075 15,226 7,613 22,840 11,420 5,710 2,855 8,566 4,283 12,850 6,425 19,276 9,638 4,819 14,458 7,229 21,688 10,844 5,422 2,711 8,134 4,067

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